Method of forming a uniform coating by electrodeposition on inte

Details Method of forming a uniform coating by electrodeposition on inte Method of forming a uniform coating by electrodeposition on inte

1991-06-27

1993-03-02

Niebling, John

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

2041811, 2041812, 2041813, 205114, 428653, C25D 1312

Patent

active

051908301

ABSTRACT:
A shaped or unshaped article of a non-ferrous metal sheet preferably aluminum having an organic, surface coating film containing conductive and/or semiconductive fine particles, preferably molybdenum dissulfide is integrally bonded with a shaped or unshaped article of a steel sheet having or not having an organic, surface coating film; and this integrated body is subjected simultaneously to electrodeposition coating.
The non-ferrous metal sheet having an organic, surface coating film containing conductive and/or semiconductive, fine particles shows excellent electrodeposition coating characteristics which can be easily regulated. Hence, integral coating after bounding with a steel sheet gives the same degree of film thickness and surface smoothness on both of the non-ferrous metal and steel sheets. This method is particularly suitable for the coating of automobile bodies integrally composed of non-ferrous metal and steel sheets ensuring energy- and labor-saving and giving final products of uniform finish.

REFERENCES:
patent: 3674670 (1972-07-01), Erikson et al.
patent: 3674671 (1972-07-01), Stromberg
patent: 3787338 (1974-01-01), Skelly et al.
Robert C. Weast, Handbook of Chemistry and Physics, CRC Press, Cleveland, 1977, pp. D-171 to D-172.
Database WPIL, Accession No. 90-087759 [12], Derwent Publications, JP-A-2 041 348 Feb. 9, 1990 (Aishin Kako K.K.).

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